Dr. Aaron Benjamin Simon, MD, PhD

  • Orange, CA
  • Radiation oncologist
NPI1801250550PAC ID5294137378
Medicare services, 2024
1,822
Medicare patients, 2024
206
Part D claims, 2024
54
Publications
33
Hospital affiliations
2
Practice address
101 City Drive South, Orange, CA 92868
Practice phone
Call (714) 456-7890
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

UCI Health - Orange

Hospital · Orange, California

See all 4 affiliations

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Dr. Aaron Benjamin Simon is a radiation oncologist in Orange, California

Dr. Simon practices at UCI Health - Orange in Orange, California, part of UC Irvine.

Dr. Simon's NPI, 1801250550, was assigned on April 8, 2016. Dr. Simon graduated from University of California San Diego School of Medicine in 2016. Dr. Simon's California license number on file is A152727.

NPI and contact details
Medicare PAC ID
5294137378
NPI enumeration date
April 8, 2016
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(714) 456-7890
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
36
Medical school graduation
2016

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Aaron Benjamin Simon practices at UCI Health - Orange in Orange, California

Dr. Simon's primary practice is UCI Health - Orange, at 101 City Drive South, Orange, CA 92868 in Orange County. The practice phone is (714) 456-7890.

  • UCI Health - Orange
    101 City Drive South, Orange, CA 92868 · Orange CountyPhone(714) 456-7890

Source: Dmand AI Affiliation Data

Dr. Aaron Benjamin Simon is affiliated with 3 sites of care and 1 medical group

Dr. Simon's primary practice is UCI Health - Orange in Orange, California, part of UC Irvine. Dr. Simon is also affiliated with Hoag Hospital Newport Beach. The medical group on file is UCI Health Physicians. Dmand AI also links Dr. Simon to 1 more other site, named with a free account.

See all 4 affiliations for Dr. Simon

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Aaron Benjamin Simon's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Simon practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
UCI Health - OrangeAvailable with a free account
+2 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Aaron Benjamin Simon is one of 685 radiation oncologists in California

Radiation oncology is Dr. Simon's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Simon is board certified in radiation oncology by the American Board of Radiology. Dr. Simon has a license on file in California.

Specialties and state licenses

  • Radiation oncology, CaliforniaPrimaryLicense A152727 · 2017 to 2025 · taxonomy 2085R0001X

Clinical focus

Dmand AI lists bladder cancer radiation, bone cancer radiation, brain cancer radiation, brain tumor radiation, breast cancer radiation, colorectal cancer radiation, head & neck cancer radiation and lung cancer radiation among the conditions Dr. Simon treats.

Radiation oncologists near Dr. Simon

Counts of radiation oncologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Aaron Benjamin Simon billed Medicare for 1,822 services in 2024

CMS data shows 1,822 Medicare services from Dr. Simon across 18 procedure codes in 2024, for 206 Medicare patients. Medicare paid $153,945 for them.

Medicare services, 20241,822
Medicare patients206
Paid by Medicare$153,945
Procedure codes18

Dr. Simon's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Imaging
2023: 1,6172024: 1,5862%
Office and hospital visits
2023: 2102024: 23612%

Where Dr. Simon's Medicare services took place, 2024

  • In an office392%
  • In a facility1,78398%

Dr. Simon compared with the California median for radiation oncologists, 2024

  • Dr. Simon
  • California median
Medicare services
1,822vs 1,44426% above
Medicare patients
206vs 16426% above
Part D claims
14vs 3256% below

Medians across 633 radiation oncologists in California with Dmand AI profiles that report each measure.

Dr. Simon's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Simon

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Aaron Benjamin Simon treated 206 Medicare patients in 2024, average age 73

CMS counts 206 Medicare patients who saw Dr. Simon in 2024. The largest group is 65 to 74, with 91 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 39% are also on Medicaid. Their average risk score is 2.76, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Simon's median patient age at 62, with 54% women.

Medicare patients, 2024206
Average age73
Average risk score2.76
Also on Medicaid39%

Dr. Simon's Medicare patients by age, 2024

Dr. Simon's Medicare patients by sex, 2024

  • Women9044%
  • Men11656%

Chronic conditions among Dr. Simon's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis54%
  4. Cancer45%
  5. Stroke or TIA35%
  6. Chronic kidney disease33%
  7. Diabetes33%
  8. Ischemic heart disease32%

Share of Medicare patients with each condition. A patient can have several.

Dr. Simon's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 62

Patient panel by sex, all payers

  • Women54%
  • Men44%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Aaron Benjamin Simon wrote 54 Medicare Part D claims in 2024

In 2024, Dr. Simon wrote 54 Medicare Part D claims for 25 patients. 87% of them were for generic drugs. CMS names the drug for 14 of them, across 1 drug with 11 or more claims each, at $165 in total drug cost.

Part D claims, 202454
Drugs named by CMS1
Total drug cost$165
Part D patients25

Dr. Simon's Part D claims by kind of drug, 2024

  • Generic47 claims87%
  • Brand-name and other7 claims13%

Dr. Simon's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

See all prescribing by Dr. Simon

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Aaron Benjamin Simon offers telehealth to Medicare patients

Dr. Simon accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Simon as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Aaron Benjamin Simon has 33 publications on record

Dmand AI links 33 papers to Dr. Simon, published from 2012 to 2025. 2021 was the busiest year, with 7. The most frequent topics are Magnetic Resonance Imaging, Brain and Oxygen Consumption. Dr. Simon has published most often in Brachytherapy. Dr. Simon's most frequent co-authors are Loren K. Mell, MD, Jyoti S. Mayadev, MD and Catheryn M. Yashar, MD.

Papers33
Years published2012 to 2025

Dr. Simon's papers by year, 2012 to 2025

Topics Dr. Simon writes about most

  • Magnetic Resonance Imaging
  • Brain
  • Oxygen Consumption
  • Cerebrovascular Circulation
  • Radiotherapy Dosage
  • Brachytherapy
  • Oxygen
  • Uterine Cervical Neoplasms

Dr. Simon's most frequent co-authors

Recent publications by Dr. Simon

See all 33 publications and co-authors

See who Dr. Simon researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Simon works with, so you can find a warm path to the right radiation oncologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Aaron Benjamin Simon received $10,209 in industry payments from 2023 to 2025

CMS Open Payments shows 18 general payments to Dr. Simon from 3 drug and device companies from 2023 to 2025. Consulting fees make up the largest share, 78% of the total. icotec Medical Inc. paid the most, $10,078.

General payments to Dr. Simon by program year, 2023 to 2025

General payments to Dr. Simon by kind, 2023 to 2025

$10.2Kin total
  • Consulting fees$8,00078%
  • Travel and lodging$1,68016%
  • Food and beverage$5295%

Companies that paid Dr. Simon the most, 2023 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Simon

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Aaron Benjamin Simon graduated from University of California San Diego School of Medicine

Dr. Simon graduated from University of California San Diego School of Medicine in 2016.

  1. Medical schoolUniversity of California San Diego School of Medicine
  2. Board certified in radiation oncologyAmerican Board of Radiology

Source: Dmand AI Professional Profile Data

Dr. Aaron Benjamin Simon accepts plans from 12 insurance carriers

Dr. Simon is in network with 12 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • United Healthcare
  • HCSC
  • Blue Cross Blue Shield of Massachusetts
  • Blue Cross Blue Shield of Michigan
  • Alliant Health Plans
  • Blue Cross and Blue Shield of Kansas City
  • +4 more carriersWith a free account

Plan types Dr. Simon accepts, by number of carriers

  1. PPO8
  2. HMO6
  3. Medicare6
  4. EPO4
  5. POS2

Source: Dmand AI Insurance Network Data

Sources for Dr. Aaron Benjamin Simon's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Aaron Benjamin Simon

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Aaron Benjamin Simon's NPI number?

Dr. Aaron Benjamin Simon's NPI number is 1801250550. It was assigned on April 8, 2016, and it is active in the NPI Registry.

What kind of doctor is Dr. Aaron Benjamin Simon?

Dr. Aaron Benjamin Simon is a radiation oncologist in Orange, California. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).

Where does Dr. Aaron Benjamin Simon practice?

Dr. Simon practices at 101 City Drive South, Orange, CA 92868. Dr. Simon's primary practice is UCI Health - Orange in Orange, California, part of UC Irvine. Dmand AI also links Dr. Simon to 1 other site.

What is Dr. Aaron Benjamin Simon's office phone number?

The practice phone on file for Dr. Simon is (714) 456-7890.

What is Dr. Aaron Benjamin Simon's medical license number?

Dr. Simon's California license number on file is A152727.

Which hospitals is Dr. Aaron Benjamin Simon affiliated with?

Dr. Simon practices at UCI Health - Orange in Orange, California. Dr. Simon is also affiliated with Hoag Hospital Newport Beach.

What medical group is Dr. Aaron Benjamin Simon part of?

Dr. Simon is linked to UCI Health Physicians.

Does Dr. Aaron Benjamin Simon accept Medicare?

Yes. CMS data shows Dr. Simon billed Medicare for 1,822 services in 2024, and Dr. Simon accepts Medicare assignment.

Does Dr. Aaron Benjamin Simon offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Simon as offering telehealth services.

How many Medicare patients does Dr. Aaron Benjamin Simon see?

CMS counts 206 Medicare patients who saw Dr. Simon in 2024, with an average age of 73.

Show 9 more questionsShow fewer questions

Is Dr. Aaron Benjamin Simon board certified?

Yes. Dr. Simon is board certified in radiation oncology by the American Board of Radiology.

What services does Dr. Aaron Benjamin Simon bill to Medicare?

In 2024, Dr. Simon's most billed Medicare services were radiation oncology (77014), radiation oncology (77300) and radiation oncology (77334).

Where did Dr. Aaron Benjamin Simon go to medical school?

Dr. Simon graduated from University of California San Diego School of Medicine in 2016.

What drugs does Dr. Aaron Benjamin Simon prescribe most?

In 2024 Medicare Part D data, Dr. Simon's most prescribed drugs by claims were Dexamethasone.

Has Dr. Aaron Benjamin Simon received payments from drug or device companies?

CMS Open Payments shows $10,209 in general payments to Dr. Simon from 3 companies from 2023 to 2025. The largest total came from icotec Medical Inc.

How long has Dr. Aaron Benjamin Simon been practicing?

Dr. Simon graduated from medical school in 2016, 10 years ago.

Does Dr. Aaron Benjamin Simon do research?

Dmand AI links 33 publications to Dr. Simon, published from 2012 to 2025.

Who does Dr. Aaron Benjamin Simon publish with?

Dr. Simon's most frequent co-authors are Loren K. Mell, MD (8 shared papers), Jyoti S. Mayadev, MD (6 shared papers) and Catheryn M. Yashar, MD (5 shared papers).

What insurance does Dr. Aaron Benjamin Simon accept?

Dr. Simon is in network with 12 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

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